??????? ?????? ??????? ????? ?????? EN1226 | ?????? ?????

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hijiazhuang Deye Piping Industries Co.? Ltd. ?????? ??? ???? ???? ?? ?????? ?????? ???? ??? ????? ????? ???????? ???????